Improvement in the manufacture of rubber floor-cloths



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HENRY W. Jostmior JERSEY CITY, NEWJERSEY.

Letters Patent No. 111,549, dated'February 7, 1871.

lMPROVEMENT IN THE MANUFACTURE OF lQUBBER FLOOR-CLOTHS, 8w

The Schedule referred to in these Letters Patent and making part of the same.

i To all whom it may concern.-

a flush or level surface, said article being applicable as floor-cloth and for numerous other purposes.

To make rubber cloth in accordance with my invention I first prepare a plain rubber-cloth base, of any desired color and thickness, and inlay it, when-in a raw state, or before vulcanizing, and as it comes from the calendering rolls, as follows: I take a sheet or strip of unvulcaniz'ed rubber, of different color from the base and somewhat thinner than it, and pass the saine in between rolls, the upper one of which has a raised profile of the desired pattern on it, as produced by knife-like projections with the spaces in between them, whichforni the body of the pattern,

7 of a depth corresponding with the thickness of the rubber, while the intervening or surrounding spaces are ofa greater depth. In this way the rubber pattern is cut out and left in the roll within or between the knives, in a raised relation to the balance of the rubber, so that, on passing the rubber-cloth base with its rubber face downward over the roll containing the rubber pattern, it will pick up the latter onto its surface and hold the same by adhesion,

When an interior pattern, thatis, a pattern within pattern, is required, then a repetition of the same process takes place with a diiferent color of rubber from that used for the first pattern, passing the rubbercloth basewith the first or main pattern on it over the roll containing the interior or additional pattern, which is thus left'mouuted on the first pattern.

Such mounting of rubber patterns on the rubbercloih base may be repeated indefinitely, according to give the rubber-cloth base.

After the rubber whole is then-put in a press, with suitable precautions against 'sticking,and.power applied to sink said pat tern or patterns into the rubher'surfiice of the base till the same are flush with said surface, such action through the press when the article is in the form 0 on its surface by successive actions of the rolls, as hereinbefore referred to. v

A rolling-mill may be substituted for the press, if preferred. p I

.The articleis then rolled up iace-side innermost, with suitable protection against sticking, and vulcanized, as plain rubber cloth is ordinarily done. produces a finished article which resembles a fancypainted rubber cloth, of different colors and patterns, according to the design requireth bnt which is in rcality an inlaid ,rubber cloth, the pattern of which is notliable to be disfigured or obliterated either by wear or washing.

When referring in this specification to rubber, of

arations of rubber are included. hat is here claimed, and desired to be secured by Letters Patent, is--- 1. An inlaid rubber cloth, substantially as specified.

2..The process, substantially as herein described, of. making rubber cloth, having a variegated surface,

base, while raw, a pattern or patterns of diiferentcolored rubber, and afterward vulcanizing the whole.

' I H; W. JOSLIN.

Witnesses Faun. Haynes, Faun. 'luscrr.

the ornamental or figured appearance it is desired to cloth'base hasbeen thus studded with a rubber pattern or patterns on its surface the V being repeated for a succession; or series of feed.

a lengthened piece or strip, with the patterns repeated This course the various well-known or other suitable prep-- by imbedding, th rough pressure, into a rubber-cloth 

